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A lever is used to lift up a 100N weight. The fulcrum is 10cm from the weight. If the effort force is applied at a distance of 50cm from the fulcrum, what is the effort force required to lift the 100N weight?
A) O N
B) 20 N
C) 50 N
D) 100 N

Respuesta :

MathPhys

Answer:

B) 20 N

Explanation:

Sum of torques about the fulcrum:

∑τ = Iα

(100 N) (10 cm) − F (50 cm) = 0

F = 20 N

Answer:

its b

Explanation:

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